[Lazarus] Mouse wheel problem

[Lazarus] Mouse wheel problem

Hi all!

I'm experiencing a problem with the mouse wheel and combobox control. I have a big form (4900x1000) on a single monitor. I put this big form on a Scrollbox to make it scrollable. To make the things easy to user/system operator, I decided to move the screen using the mouse wheel. This works fine and makes the navigation on this screen/form easy.

The problem appears when the mouse cursor stops (after mouse wheel) over a combobox control. Even the combobox over the mouse cursor doesn't have the focus, the next mouse wheel event doesn't move the screen, but changes the combobox selection.

All combobox on my application has Style set to csDropDownList. Another point that I noted, is that mouse wheel change doesn't occur if ItemIndex = -1.

I'm experiencing a problem with the mouse wheel and combobox control. I have a big form (4900x1000) on a single monitor. I put this big form on a Scrollbox to make it scrollable. To make the things easy to user/system operator, I decided to move the screen using the mouse wheel. This works fine and makes the navigation on this screen/form easy.

The problem appears when the mouse cursor stops (after mouse wheel) over a combobox control. Even the combobox over the mouse cursor doesn't have the focus, the next mouse wheel event doesn't move the screen, but changes the combobox selection.

All combobox on my application has Style set to csDropDownList. Another point that I noted, is that mouse wheel change doesn't occur if ItemIndex = -1.

I'm experiencing a problem with the mouse wheel and combobox control. I have a big form (4900x1000) on a single monitor. I put this big form on a Scrollbox to make it scrollable. To make the things easy to user/system operator, I decided to move the screen using the mouse wheel. This works fine and makes the navigation on this screen/form easy.

The problem appears when the mouse cursor stops (after mouse wheel) over a combobox control. Even the combobox over the mouse cursor doesn't have the focus, the next mouse wheel event doesn't move the screen, but changes the combobox selection.

All combobox on my application has Style set to csDropDownList. Another point that I noted, is that mouse wheel change doesn't occur if ItemIndex = -1.